The basic concept is a little… underwhelming? It's just a box that melts through stuff under certain conditions, and I really can't take the test logs seriously at all. The "Trying to have sex with a volcano" and "like the children's game "hot potato"" lines are rather unprofessional, and don't contribute much to the narrative overall.

Why does this thing exist? Does it have any backstory at all to make it more than just [object] with [ability]?

To quote vezaz, "Get away from "type of object" or "sort of creature" and instead start thinking about stories you want to tell. Start looking for moments in your everyday life that give you pause, that are unusual, or that make you go off into a daydream. Then think about bringing the reader to that same moment."

Nowadays, readers on the site want to see more than an information dump amounting to a video game stats page. How do you want your reader to respond to this emotionally or intellectually? What will make this memorable?